After a brief discussion of the reasons why user authentication is needed on an amateur satellite service system, we'll cover a proposed system to implement reasonably secure user authentication on a P4XT digital multiplexing satellite transponder, within the bounds of the (United States) rules.
This presentation was made at the QSO Today Virtual Ham Expo. For more information go to: https://qsotodayhamexpo.com
Also visit the QSO Today Podcast for 1 hour interviews of ham radio operators who make these presentations: https://www.qsotoday.com